Garmin G3X Pilot's Manual page 253

OBSTACLE INFORMATION
Obstacles are shown on the Terrain Page at or below the map range of 12 nm.
Obstacles are also shown on the Map Page when the map range is set to 3 nm or
below.
Standard aeronautical chart symbols are used for lighted or unlighted obstacles
taller than 200 feet Above Ground Level (AGL). Refer to the Obstacle Icons legend
below.
Each obstacle is labeled with the altitude of the top of the obstacle, or Mean Sea
Level (MSL). Each obstacle also lists, in parentheses, the actual height of the obstacle,
or Above Ground Level (AGL).
Unlighted
Obstacle
< 1000' > 1000'
AGL AGL
190-01115-00 Rev. K
Lighted Obstacle
< 1000' > 1000'
AGL AGL
Terrain Obstacle Colors and Symbology
Garmin G3X Pilot's Guide
Hazard Avoidance
Potential
Impact Obstacle Location
Points
WARNING: Red
obstacle is above or
within 100' below
current aircraft altitude
CAUTION: Yellow
obstacle is between
100' and 1000'
(default) below current
aircraft altitude
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